Clusters of slow-moving thunderstorms dumped heavy rains on North Texas Thursday morning, forcing authorities to close Interstate 35 for several hours near the Red River.

Several swift water rescues were reported in Cooke County Thursday morning where more than 10 inches of rain had fallen.

“It’s been raining cats and dogs since 12:30 this morning, “ said Shell Service Station employee John Davis in Valley View. The station, at 13965 Interstate 35, had standing water in it Thursday morning. “My rain gauge shows 11.6 inches of rain.”

Interstate 35 was closed near Valley View for several hours Thursday morning and nearby Farm Road 922 was also closed because of high waters, Texas Department of Public Safety officials said.

Shortly after 8 a.m., officials with the Texas Department of Transportation said that I-35 had been reopened, but “travel was unreliable because of floodwaters - seek alternate routes.”

The National Weather Service in Fort Worth reported 10.78 inches of rain as of 6:30 a.m. just south of Valley View, and 8.11 inches had fallen near Alvord in Wise County.

Flash flood warnings were in effect Thursday for Cooke, Wise and Denton counties. The warnings extend into Friday for Denton and Wise.

Shortly after 10 a.m. Thursday, heavy rains arrived in Tarrant County. Rain poured on downtown Fort Worth, and a flood advisory has been issued for Tarrant County. The NWS office detected storms dropping more than an inch of rain per hour, with the heaviest downpour occurring in Azle.

“The same type of slow-moving storms that hit in Cooke County could be here,” said meteorologist Lamont Bain at the NWS office in Fort Worth.

The National Weather Service has a flash flood watch in effect until Friday afternoon for most North Texas counties.

At least 2 to 4 inches of rain are forecast, said Fort Worth meteorologist Joe Harris.

“It will not be continuous for the next 48 hours, but there will be a period of time Thursday where it rains most of the day,” Harris said.

That period is during most of the “work day,” he said.

The chance of rain Thursday was at 80 percent on Thursday.

Harris said there could be some small, pea-sized hail and 40 to 50 mph wind gusts, but lightning is going to be one of the biggest concerns.

“Stay indoors and stay off your electronics,” he said, noting that wireless devices are not a concern.

During the last round of flooding in late June, two people in Fort Worth reported feeling shocks through their computer keyboards.

Temperatures are expected to be in the upper 80s, he said.

“It’s going to be muggy,” Harris said.

The chance of rain will drop to 50 percent Friday afternoon and 20 percent by Friday night. Saturday it’s expected to be 91 degrees and Sunday 93, Harris said. Temperatures will near 100 by next Wednesday.

Here’s raw video from the Valley View Shell station and Krum creek from our partners at WFAA.com: